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| Inc/het | Q static | No. of studies | Degrees of freedom | P value | |
|---|---|---|---|---|---|
| Operation time | |||||
| Qhet | 203.37 | 9 | 7 | < 0.001 | |
| Qinc | 190.64 | 9 | 6 | < 0.001 | |
| Qhet | 12.73 | 9 | 1 | < 0.001 | |
| Blood loss | |||||
| Qhet | 20.72 | 8 | 6 | 0.002 | |
| Qinc | 12.50 | 8 | 5 | 0.029 | |
| Qhet | 8.22 | 8 | 1 | 0.004 | |
Inc = inconsistency, het = heterogeneity.
